Well kept and neatly groomed smallpatch of hair above a woman's vagina. Muff is not a bush which it is commonly mistaken for. A bush is when a female lets her pubic hair grow out of control and untamed.
Short for "muffin top;" the excess pudge in a woman's love handle/hip region which is the result of wearing low-waist pants that are too tight. Left with nowhere to go, the hip-fat thus cascades out and over the waistband of the pants, resembling the top of a muffin.
noun: "Check out the muff on that size 8 girl trying to pull off those size 4 pants."
verb: "After the pint of Ben and Jerry's, I was muffing all over the place."